Echinoderms ( Phylum Echinodermata)
by Olivia and Brennan Patrick Says, "Echinoderms are better than sperms, their skin is thicker, and if you cut them and half and they grow back quicker!"
Starfish
Sea Cucumber
Sea Urchin
Sand Dollar
have calcite plates that give them thick spiny skin
have radial body symmetry (five rayed)
are invertebrates (have endoskeletons made of calcite plates)
All live in marine environments
are colemates
Deuterostome embryo development (develop the anus before the mouth)
have no head
more than two cell layers,tissues and organs
feeds on fine particles in the water
normally reproduce sexually
Multiple Choice Question: Which is not an Echinoderm?
a) Sea cucumber
b) Sea Urchin
c) Starfish
d) Jellyfish
by Olivia and Brennan
Patrick Says, "Echinoderms are better than sperms, their skin is thicker, and if you cut them and half and they grow back quicker!"
Starfish
Sea Cucumber
Sea Urchin
Sand Dollar
Multiple Choice Question: Which is not an Echinoderm?
a) Sea cucumber
b) Sea Urchin
c) Starfish
d) Jellyfish